RaceAtlas

Alcatraz Island Tides: Friday, August 13, 2021

Tide heights at Alcatraz Island with the flood, ebb and slack schedule at the Golden Gate.

5.0 ft3:30 AM0.9 ft9:31 AM5.8 ft4:23 PM1.4 ft10:31 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.8 ft at 4:23 PM, low 0.9 ft at 9:31 AM. Gate: flood 3.4 kt at 1:44 PM, ebb 1.5 kt at 7:52 AM.
Modelled current at the Golden Gate on a 3.4 kt floodThe Gate at max flood, 3.4 kt
Tide height
TimeHeight
3:30 AMHigh5.0 ft
9:31 AMLow0.9 ft
4:23 PMHigh5.8 ft
10:31 PMLow1.4 ft
Current · Golden Gate
TimeStateSpeed
1:31 AMmax flood ENE (074°)2.5 kt
4:59 AMslack–
7:52 AMmax ebb SW (235°)1.5 kt
10:33 AMslack–
1:44 PMmax flood ENE (074°)3.4 kt
5:20 PMslack–
8:01 PMmax ebb SW (235°)1.4 kt
11:31 PMslack–

Not for navigation. These are harmonic predictions, not live measurements. Tide heights: station 9414792 (Alcatraz Island). Currents: station SFB1203 (San Francisco Bay Entrance, Golden Gate). · RaceAtlas, the SF Bay current atlas.